Emmanuel Eboue and Bony Wilfried scored the goals which saw Ivory Coast go through to a quarter-final meeting with African Nations Cup hosts Equatorial Guinea after winning Group B.
The win also saw losers Angola go out of the competition as they finished with a worse goal difference than Sudan, who were 2-1 winners over Burkina Faso.
Angola might have finished one goal worse off than Sudan but the gulf between them and Ivory Coast was easily greater than the 2-0 scoreline.
Eboue gave Ivory Coast the lead when he slid in at the far post to score on the half hour and Wilfried doubled the advantage when he punished a mix-up in defence 30 minutes later.
Max Gradel had the first effort for Ivory Coast after five minutes but shot straight at goalkeeper Alegre Wilson.
Manucho was doing most of the attacking for Angola but saw Sol Bamba beat him to a loose ball as he threatened.
Wilfried then cut in from the left but Wilson turned his shot round the post, before Angola captain Andre Macanga sliced a shot badly wide during a rare attack.
On the half hour Wilfried burst into the area and hit the ball low across goal. Miguel could only hold up the ball as he tried to clear and Eboue was on hand to open the scoring.
Bamba got up well to head clear a free-kick early in the second half and then his keeper Daniel Yeboah was lucky to see his clearance rebound off the charging Manucho and go out for a goal kick.
Ivory Coast extended their lead when Abdulkader Keita played a ball behind the Angola defence and when Alex Massunguna headed it past his own keeper Wilfried ran through to tap into an empty net.
Bamba headed wide from close range when Igor Lolo headed on Gradel's corner as Ivory Coast nearly added a third.